GM is the first to announce Siri integration with two new car models: the Chevrolet Spark and the Sonic Drive. The feature was dubbed "Eyes Free" and was announced at Apple's World Wide Developers Conference (WWDC) in June by former iOS chief, Scott Forstall. Basically, "Eyes Free" will be integrated via the car's Bluetooth functionality and the iPhone itself. The user can then initiate Siri's voice command by tapping a button on the steering wheel, and Siri's responses will be played over the car's audio system. Other car manufacturers such as Chrysler, Honda, Toyota, Jaguar, Audi, Land rover, GM, BMW and Mercedes are slated to incorporate Siri's "Eyes Free" as well. Check out the full press release after the break.